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xPro Controller Board Proximity Sensor

Discussion in 'Controller Boards' started by Federico Giovine, Jul 2, 2018.

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  1. Federico Giovine

    Federico Giovine New
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    I am planning to build a laser cutter using a 100W CO2 laser and an xPro board. So far, it seems like it can control the laser's power with PWM no problem, but before I settle with that board I want to be able to see if it can support a proximity sensor. I want to integrate it so that I can have a z-axis so I can automatically and precisely focus the lens, and possibly change the focal distance if I have to do multiple cuts.

    Does the board have any inputs for a sensor like that?

    I saw some threads by mentioning laser diodes and a z-axis, but none of them mention a proximity sensor.

    On the spark concepts store page for the board it mentions auto-focus, but in the documentation it's never mentioned.

    Also, if you believe a better board is suited for the job let me know.
     
    #1 Federico Giovine, Jul 2, 2018
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

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    You could use the Z-Endstop input. It expects a digital signal (high or low) so if your sensor outputs appropriately (ie cannot support reading distance over I2c, SPI, Analog etc, only a HIGH/LOW) you can use that. Alternatively you can home the Z axis to a given min/max using the endstop, and then read the Proximity sensor as a Probe (See gnea/grbl for details)
     
    #2 Peter Van Der Walt, Jul 3, 2018

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